bug#40968: 28.0.50; (apply nil)

[Pip Cet]

enterOn Wed, May 6, 2020 at 6:42 PM Mattias Engdegård <mattiase@acm.org> wrote:
> That patch is fine but perhaps incomplete, if we want (apply nil) to result 
> in the same error when interpreted and byte-compiled.

It is incomplete. However, I've yet to find an elegant way to fix the
byte compiler and get it to emit the right error message. Can you
think of one?

(apply nil) is easy to fix, of course, but (apply
(function-returning-nil)) is more difficult.